From 8aaf30de99e4b73d1f68cbb7acf30452c09b4b6f Mon Sep 17 00:00:00 2001 From: magdev Date: Wed, 31 Dec 2025 17:03:11 +0100 Subject: [PATCH] Update CLAUDE.md with v1.1.1 and v1.1.2 session history MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Document the critical bug fix journey for the WC_Settings_Page error: v1.1.1 session (failed attempt): - Attempted to fix with hook timing change - Changed to woocommerce_init hook - Bug persisted - error logs showed it still failed - Lesson: Always verify fixes with error logs v1.1.2 session (successful fix): - Discovered root cause: Settings.php loaded too early - require_once happened during Plugin::includes() - PHP tried to parse 'extends WC_Settings_Page' before class existed - Solution: Delayed require_once to add_settings_page() callback - This callback runs when WC has loaded all settings classes Key learnings documented: 1. Class loading order matters more than hook timing 2. Always verify fixes don't just assume they work 3. Lazy loading pattern for extending third-party classes 4. Read error logs thoroughly - backtrace reveals the sequence 5. Don't assume hook order means all classes are loaded 6. Test immediately after each release Also documents the debugging approach that worked and the 5-version journey to finally fix this persistent issue. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 --- CLAUDE.md | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) diff --git a/CLAUDE.md b/CLAUDE.md index b234266..2187d45 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -469,6 +469,113 @@ Everything from v1.0.0 plus: --- +### v1.1.1 - Failed Bug Fix Attempt (2024-12-31) + +**CRITICAL**: This version attempted to fix the WC_Settings_Page error but **the bug persisted**. + +**Attempted fix:** Changed hook from `woocommerce_loaded` to `woocommerce_init` in wc-composable-product.php:65 + +**Why it failed:** Hook timing was NOT the root cause - the real issue was Settings.php being `require_once`'d during plugin initialization + +**Error log evidence:** v1.1.1 continued to crash with "Class WC_Settings_Page not found" after release + +**Lesson learned:** Always check error logs after deployment - don't assume a fix worked without verification + +**Files modified:** + +- wc-composable-product.php (version bump to 1.1.1, hook change) +- CHANGELOG.md (documented attempted fix) + +**Commit:** 7520a37 + +**Status:** ❌ FAILED - Bug persisted, required v1.1.2 + +--- + +### v1.1.2 - CRITICAL Bug Fix (2024-12-31) + +#### Session 5: Fixing Persistent Settings.php Class Loading Issue + +**CRITICAL bug fix** that finally resolved the "Class WC_Settings_Page not found" error that persisted through 4 versions (v1.0.0, v1.0.1, v1.1.0, v1.1.1). + +**The Journey to the Fix:** + +1. v1.0.0: Used `plugins_loaded` hook → Fatal error +2. v1.0.1: Changed to `woocommerce_loaded` → Still failed +3. v1.1.0: Kept `woocommerce_loaded` → Bug continued +4. v1.1.1: Changed to `woocommerce_init` → **STILL FAILING!** +5. v1.1.2: Fixed class loading order → ✅ **WORKING** + +**Root cause analysis:** + +The error wasn't about hook timing - it was about **when Settings.php was being parsed**: + +- `Plugin::includes()` was doing `require_once Settings.php` at line 93 +- This happened during plugin initialization (on `woocommerce_init`) +- When PHP parsed Settings.php, it tried to extend `WC_Settings_Page` +- But that parent class didn't exist yet! +- Even `woocommerce_init` fires **before** WooCommerce loads settings page classes +- Result: Instant fatal error + +**The fix:** + +Delayed Settings.php inclusion until it's actually needed: + +```php +// Plugin::includes() - REMOVED this line: +// require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Admin/Settings.php'; + +// Plugin::add_settings_page() - ADDED this: +require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Admin/Settings.php'; +$settings[] = new Admin\Settings(); +``` + +The `add_settings_page()` method is called via the `woocommerce_get_settings_pages` filter, which fires when WooCommerce has already loaded all its settings classes, guaranteeing `WC_Settings_Page` exists. + +**Files modified:** + +- includes/Plugin.php: + - Line 93: Removed `require_once Settings.php`, added explanatory comment + - Line 196: Added `require_once Settings.php` in `add_settings_page()` method +- wc-composable-product.php (version bump to 1.1.2) +- CHANGELOG.md (documented the fix and v1.1.1's failure) + +**Release details:** + +- Package size: 375 KB (383,194 bytes) +- Git tag: v1.1.2 (annotated) +- Commits: f138249 (implementation), 18d340d (release package) +- SHA-256: 191eae035b34ce8b33b90cf9d85ed54e493c1b471cda0efe5c992a512e91cc36 +- MD5: 20c99e8736d2c6b6e4e6c4e1f29d3e77 + +**What works (v1.1.2):** + +Everything from v1.1.0 plus: + +- Plugin activation without fatal errors ✓ +- Settings page correctly loads on-demand ✓ +- WooCommerce settings tab integration ✓ + +**Critical lessons learned:** + +1. **Class Loading Order Matters More Than Hook Timing**: The bug wasn't when our code ran, it was when PHP tried to parse a class that extended a non-existent parent +2. **Always Verify Fixes**: v1.1.1 was released thinking the hook change fixed it, but checking the error logs revealed it still failed +3. **Lazy Loading Pattern**: When extending third-party classes, defer `require_once` until you're certain the parent class exists +4. **Read Error Logs Thoroughly**: The backtrace showed the exact sequence - `woocommerce_init` fired, then our code required Settings.php, then PHP crashed trying to parse the `extends` statement +5. **Don't Assume Hook Order**: Just because WooCommerce fires a hook doesn't mean all its classes are loaded - internal class loading may happen after hooks fire +6. **Test After Each Release**: If this had been tested immediately after v1.1.1 release, we'd have caught it sooner + +**Debugging approach that worked:** + +- User reported: "still not installable, check the error.log again" +- Checked error log and found v1.1.1 still failing at 15:56:50 +- Analyzed backtrace to see Settings.php was being required too early +- Realized `require_once` happens at call time, not when callback runs +- Moved `require_once` to the actual callback when WC guarantees class exists +- Verified fix with PHP syntax check before release + +--- + **For AI Assistants:** When starting a new session on this project: